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Tecmint: Linux Howtos, Tutorials & Guides
  • Latest Tutorials
  • Commands
    • A – Z Linux Commands
    • 100+ Linux Commands
  • Tools
  • Distros
    • Linux Distros for Beginners
    • Linux Distros for Experts
    • New Linux Distros
    • Linux Server Distros
    • Secure Linux Distros
    • CentOS Alternatives
    • RedHat Distributions
    • Debian Distributions
    • Ubuntu Distributions
    • Arch Linux Distros
    • Rolling Linux Distros
    • KDE Linux Distros
    • Linux Distros for Old PC
    • Linux Distros for Kids
    • Linux Distributions for Students
    • Linux Distros for Windows
  • Courses
    • Bash Scripting
    • Learn Linux
    • AI for Linux
    • RHCSA Certification
    • RHCE Certification
    • LFCS Certification
  • eBooks
    • RHCSA Exam
    • RHCE Exam
    • LFCS Exam
    • LFCE Exam
    • LFCA Exam
    • Ansible Exam
  • About
  • Advertise
Use sed and awk to Modify Config Files in Linux

How to Use sed and awk to Modify Config Files in Linux

Linux configuration files are often plain text, which makes them easily editable using command-line tools. Among the most powerful of

Let Sudo Insult You When You Enter Incorrect Password

Sudoers is the default sudo security policy plugin in Linux; however, experienced system administrators can specify a custom security policy

SSH Two Factor Google Authentication

How to Setup Two-Factor Authentication For SSH In Linux

By default, SSH already uses secure data communication between remote machines, but if you want to add an extra security

Linux Services and Daemons

How Linux Services and Daemons Work (and How to Control Them)

When starting out with Linux, you may encounter the terms “services” and “daemons” quite frequently, which refer to background processes

Master Linux in Just 7 Days

Master Linux in Just 7 Days – Even If You’re a Complete Beginner!

After the success of our RHCSA / RHCE and LFCS / LFCE certification books, we are now happy to present

Linux interview questions with answers

10 Core Linux Interview Questions and Answers – Part 4

Thanks again for the amazing response to Parts 1, 2, and 3 of our Linux Interview Questions series here on

Open-Source OCR Tools for Linux

Top 5 Open-Source OCR Tools for Linux in 2025

OCR stands for optical character recognition, and software of this type is designed to convert images, pictures, or scanned documents

Lesser Known Useful Linux Commands

10 Little-Known Linux Commands You Probably Missed – Part 5

After four highly appreciated and successful articles in our series on Lesser-Known Linux Commands, we’re excited to bring you the

Linux Interview Questions and Answers

10 Linux Interview Questions with Examples – Part 3

Welcome back to our Linux Interview Questions series on Tecmint! We’re truly grateful for the encouraging feedback on the first

atop: System and process monitor for Linux

How to Install ‘atop’ to Monitor Real-Time System Performance

atop is a full-screen performance monitoring tool that provides detailed reports about all system processes, including those that have already

Automate Linux Backups with rsync and cron

Set Up Incremental Backups with rsync and cron on Linux

Backups are like insurance; you don’t need them every day, but when disaster strikes, such as accidental file deletion, a

Automatically Block Suspicious IPs with iptables and Fail2Ban on Linux

How to Create a Simple IP Blocker Script Using iptables and Fail2Ban

Today, I’m going to show you a simple but effective way to automatically block suspicious IPs using a small script

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